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Technical Data Sheet
PartsTable / COMPONENT / 3856B8
3856B8 ✓ Verified by PartsTable
— · BOLT SCREW
WHAT YOU NEED TO KNOW
Grade/class stamped on head determines strength Metric and imperial threads look similar — measure pitch
Verify thread pitch — metric != imperial
PRODUCT OVERVIEW

The RING,RETAINING is a the manufacturer industrial component. Key specifications include material: STEEL, end_style: 90 DEGREE PARALLEL, ring_style: STRAIGHT GAP, usage_design: EXTERNAL, inside_diameter: 0.307 INCHES NOMINAL IN, outside_diameter: 0.397 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-205-5131, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
3856B8
NSN: 5325-00-205-5131
FSC: 5325
CAGE: 60893 — TROY SUNSHADE CORP. DBA BAGS BY TROY (USA)
SPECIFICATIONS
materialSTEEL
end_style90 DEGREE PARALLEL
ring_styleSTRAIGHT GAP
usage_designEXTERNAL
inside_diameter0.307 INCHES NOMINAL IN
outside_diameter0.397 INCHES NOMINAL IN
material_diameter0.045 INCHES NOMINAL IN
casehardening_indicatorNOT CASEHARDENED
cross-sectional_shape_styleROUND
NSN5325-00-205-5131
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 3856B8 · OEM ⚠ VERIFY BEFORE ORDERING Verify thread pitch before ordering — metric (M8×1.25) ≠ imperial (5/16-18). Wrong thread = wrong part. Grade/class stamped on bolt head determines tensile strength ✓ BROKER TIP Grade/class stamped on head determines tensile strength. Grade 8 > Grade 5 > Grade 2. Always confirm head marking matches specification requirement PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
MATERIAL DIAMETER: 0.045 INCHES NOMINAL IN
•
MATERIAL: STEEL
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
•
RING STYLE: STRAIGHT GAP
•
INSIDE DIAMETER: 0.307 INCHES NOMINAL IN
•
USAGE DESIGN: EXTERNAL
•
CROSS-SECTIONAL SHAPE STYLE: ROUND
•
END STYLE: 90 DEGREE PARALLEL
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL DIAMETER0.045 INCHES NOMINAL IN
MATERIALSTEEL
CASEHARDENING INDICATORNOT CASEHARDENED
RING STYLESTRAIGHT GAP
INSIDE DIAMETER0.307 INCHES NOMINAL IN
USAGE DESIGNEXTERNAL
CROSS-SECTIONAL SHAPE STYLEROUND
END STYLE90 DEGREE PARALLEL
OUTSIDE DIAMETER0.397 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
45133Interchangeable
interchangeable cross-reference
interchangeable
B420Interchangeable
interchangeable cross-reference
interchangeable
40085Interchangeable
interchangeable cross-reference
interchangeable
717-003313Interchangeable
interchangeable cross-reference
interchangeable
45133-100Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 3856B8?
3856B8 is a RING,RETAINING.
What parts can replace 3856B8?
There are 5 known substitutes for 3856B8: 45133, B420, 40085 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 3856B8?
3856B8 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-205-5131. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026